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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 865-870 
    ISSN: 0009-2940
    Keywords: Decamethylplumbocene protonation ; Half-sandwich lead compounds ; Lead(II) π-complexes: 207Pb NMR ; (Pentamethylcyclopentadienyl)lead tetrafluoroborate, crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Lead(II) Compounds with π-Bonded pentamethylcyclopentadienyl Ligands - Syntheses, Structures, and Bonding PropertiesThe reaction of (pentamethylcyclopentadienyl)lithium with lead(II) chloride leads to Me5C5PbCl (1) or (Me5C5)2Pb (2) depending on the stoichiometry. The half-sandwich complexes Me5C5Pb(BF4) (3a) and Me5C5Pb(CF3SO3) (3b). are formed from 2 by reaction with tetrafluoroboric acid and trifluoroacetic acid, respectively. 2,2′-Bipyridine and 1,8-naphthyridine react with 3a and 3b to yield the 1:1 adducts 4a, 4b, and 5. An X-ray structure analysis of 3a shows the presence of BF4-bridged dimeric units. Based on 1H-, 13C-, 11B-, 19F-, and 207Pb-NMR data, the bonding in the π-complexes is discussed.
    Notes: Die Reaktion von (Pentamethylcyclopentadienyl)lithium mit Blei(II)-chlorid führt je nach Stöchiometrie zu Me5C5PbCl (1) oder zu (Me5C5)2Pb (2). Aus 2 entstehen durch Umsetzung mit Tetrafluoroborsäure bzw. Trifluormethansulfonsäure die Halbsandwich-Komplexe Me5C5Pb(BF4) (3a) bzw. Me5C5Pb(CF3SO3) (3b). Mit 2,2′-Bipyridin und 1,8-Naphthyridin bilden die Komplexe 3a und 3b die 1:1-Addukte 4a, 4b und 5. Eine am Komplex 3a durchgeführte Röntgenstrukturanalyse zeigt das Vorliegen BF4-verbrückter dimerer Einheiten. Die Bindungsverhältnisse in obigen π-Komplexen werden u.a. anhand von 1H-, 13C-, 11B-, 19F- und 207Pb-NMR-Daten diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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